#A33D37#A33D37

#A33D37 is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.1% C 0.137 H 26.5°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#A33D37
RGB	rgb(163, 61, 55)
HSL	hsl(3, 50%, 43%)
HSV	hsv(3, 66%, 64%)
CMYK	cmyk(0%, 62.6%, 66.3%, 36.1%)
CIE-LAB	lab(40.25, 41.80, 25.87)
CIE-LCH	lch(40.25, 49.16, 31.75°)
OKLab	oklab(50.09% 0.1221 0.061)
OKLCH	oklch(50.09% 0.137 26.5)
XYZ	xyz(17.4643, 11.4022, 4.8949)
Luminance	0.1140 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A33D37 #379DA3

analogous

#A33767 #A33D37 #A37337

triadic

#A33D37 #37A33D #3D37A3

tetradic

#A33D37 #67A337 #379DA3 #7337A3

square

#A33D37 #67A337 #379DA3 #7337A3

split-complementary

#A33D37 #37A373 #3767A3

monochromatic

#471B18 #752C28 #A33D37 #C55952 #D48580

Accessibility & contrast

On white

6.40

#A33D37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#A33D37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A33D37

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A33D37	#FFFFFF	#000000	##FFFFFF
##A33D37	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585136

Deuteranopia (green-blind)

#716734

Tritanopia (blue-blind)

#B3273C

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #a33d37;
/* rgb */ color: rgb(163, 61, 55);
/* oklch */ color: oklch(50.1% 0.137 26.5);

Tailwind

colors: {
  custom: {
    50: '#c5776e',
    500: '#a33d37',
    950: '#000000',
  },
}

SCSS

$custom: #a33d37;
$custom-light: #c5776e;
$custom-dark: #000000;

JSON

{
  "hex": "#a33d37",
  "rgb": {
    "r": 163,
    "g": 61,
    "b": 55
  },
  "hsl": {
    "h": 3.333,
    "s": 49.541,
    "l": 42.745
  },
  "oklch": {
    "l": 0.50093,
    "c": 0.13651,
    "h": 26.5
  },
  "luminance": 0.114
}

Semantic roles & 50–950 ramp

primary

#A33D37

secondary

#78BABE

accent

#D1D94F

background

#FCF7F6

surface

#F9EDEB

border

#D2C8C6

text

#140907

muted

#827B7A

Preview Lab

Preview with #A33D37

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →